This is the latest edition of the flagship volume in the best-selling On Call series. The book continues to serve as a reassuring second opinion for readers who are on call, alone, and faced with a patient problem in the middle of the night. It tells them what to do and how to do it quickly-from diagnosing a difficult or life-threatening situation to prescribing the right medication. The introduction of a new 2-color interior design allows readers to easily discriminate between instructions and protocols, rationales, and medications-which all appear in different typefaces.